Take-up brake



H. W. MUHLEISEN Dec. 9, 1924- TAKE -UP BRAKE- OIiginal Filed May 24, 1922 Patented Dec. 9, 1924.

UNITED STATES HENRY W. IVUHLESEN, OF 'LOS ANGELES, CL'IFORNA,

SSIGNOR, BY DIRECT AND MESNE .ASSGNMENTS, TO Vf. S. RUSH @t CO., nl. COPAR-TNERSI-IP COMSPOSED OF W. S. RUSH, E. S. RUSH, AND B. C. GRAVES, ALL OF LGS ANGELES, CALIFORNIA.

TAKE-UP BRAKE.

Application filed May 24, 1922, Serial No. 563,259. Renewed October 8, 1924.

T all whom t 'may concern.:

Be it known that I, HENRY W. MUH- LnrsnN, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles, State of California, have invented a new and useful Take-Up Brake, of which the following is a speciiication.

My invention relates to brakes, and more particularly to the bralre which is adapted to be applied to the standard form of Ford automobiles.

rThe principal object of my invention is to provide a brake for a Ford automobile which is so constructed that after the brake has become partially worn, the brake can be readjusted to bring back its full condition of efficiency.

further object of the invention is to provide a novel adjusting means for taking up the wear of the brake shoes.

Further objects and advantages will appear hereinafter from the following description and drawings.

Referring to the drawings, which are for illustrative purposes only,

F ig. 1 is a side elevation of a preferred embodiment of iny invention.

Fig. 2 is an elevation partially in section on a plane represented by the line 2 9. of Fig. 1.

Fig. 3 is a section on an enlarged scale on a plane represented by the line 3 3 of Fig. 2.

Fig. 4 is a view showing the adjusting ends of the shoes, and,

Fig. 5 is a diagram showing two positions of the brake adjusting sleeve.

ln the form of the invention shown, 11 is an axle housing which is stationary and which carries an axle not shown which drives the wheel 12. Carried by the wheel 12 is a bralre drum 13 which has an inner cylindrical surface against which the bral-re shoes 14 are expanded.

rl"hese brake shoes, as illustrated, each consist of two pieces of strap iron 15 and 16 secured together by rivets 17. Brake lining 18 is secured to the outer surface of the shoes 14 for the purpose of increasing the coefficient of friction.. Tension springs 19 are secured between the brake shoes, as shown, these springs tending to pull the setting ends 20 and the adjusting ends 21 of the shoes together so that the shoes will not make contact with the inner surface of the drum 13 when the brake is released.

Projecting into the space between the setting ends 2O of the shoes 14 is the standard cam which is operated by a brake lever 26 which is connected to suitable mea-ns controlled by the driver of the automobile. ily exerting pressure on the end of the lever 26, the brake cam may be turned, thus forcing the setting ends 20 of the shoes 14 apart so that the brake lining 18 frictionally engages tho inside of the drum 13. The parts 25 and 26 are standard equipment on Ford cars and form no part of this invention.

Projecting into the space between the adjusting ends 21 is a pin 30 which may have a square end, as shown at 31 in Fig. 4, this pin having a shoulder bearing against a plate 3Q of the axle housing 11. rl-he pin is,

threaded in a boss 33 in the housing and may be secured from turning therein by means of a loch nut 34.

l provide a sleeve 40 which is preferably formed of seamless tubing and which has two dimensions, A and B, as shown in Fig. 5)?, which shows this sleeve 40 in two positions, one in full lines and the other dotted. lt will be noted that in Fig. 1 the sleeve 40 is in the position corresponding to the full line position in Fig. 5 and that the dimension A represents the distance between the adjusting ends 21 of the brake shoe 14. It will be further noted that the sides of the sleeve 40 are flattened so that it tends to remain in this position. rlhis is the initial position of this sleeve when the4 brake is first put in use and the brake lining 18 is new.

l also provide a guide 45, best shown in Fig. 3, this guide pivoted upon the pin and projecting into slots 46 formed in the adjusting ends 21 of the brake shoes 14. This guide tends to keep the two adjusting ends 21 in alinement with each other and thus insure an even wearing of the brake surfaces.

After the bralre has been operated for a certain period, the brake lining 18 becomes worn. For the purpose of taking up this wear, the sleeve may be taken off the pin 30 and secured thereon in the position shown in Fig. 4 which corresponds to the dotted line position in Fig. 5, the distance between the adjusting ends 21 of the brake shoe 14 then being equal to the distance B. Indentations 50 are provided in the sidesoi' the sleeve 4:0 to hold it centrally on the pin 30. When in the position shown in Fig. 4;, it will be `noted'that the adjusting ends 21 O' the brake s'hoe's are held further apart than in the position shown in Fig. 1 and that the brake may then be operated until the brake linings 18 are entirely worn out.

I claim as my invention: j

1. In a brake, the combination of: a brake drum; two shoes inside said brake drum; each shoe having an adjusting end and a setting end, the adjusting ,end 0i' one shoe being adjacent to the adjusting end of the other shoe and 'the setting end of one shoe being adjacent to the setting end of the other shoe; means by which the setting ends ot the shoes may be forced apart; a pin projecting into Y the space between the adjusting ends of said shoes; and a rectangular block carried on said pin to be turned into either ot two positions so' that either its sides or its ends may engage said adjusting ends oi said shoes to adjust the bra-ke.

2. In a brake; the combination of: a brake drum; two shoes inside said brake drum, each shoe having an adjusting end and a setting end; the adjus-ting end ott one shoe being adjacent to the adjusting end or' the other shoe and the setting end or' one shoe being adjacent to the setting end of the other shoe; means by which the setting ends of v'the shoes may be forced apart; a pin projecting into the space between the adjusting endsof said shoes, and an adjusting block carried on said pin to be turned into either4 of two positions to adjust the brake; said block being s0 shaped with relation to said adjusting ends ofsa-id shoesthat it will remain independently in either position when oncejset. M I w l .f

3. In a brake, the combination of: a brake drum; two shoes inside said brake drum, each shoe having an adjusting end 'anda 'setting end, the adj Listing-end ot one"sl`ioe being adjacent' to the adjusting end ofthe 4other shoe and the setting end of one shoe being adjacent to the setting end of the other shoe; means by which the setting ends ot the shoes may be orcedv apart; a 4projecting into the space between the adjusting yends of said shoes; an adjusting block Icarried von" said pin to be. tairnedy into eitherdor" two positions to adjust the brake; and a: guiding member i fitting on said` pin, andl extending-'through slots in said adjusting-ends of saidshoes.

In abralre, the' combination of: abrake drum; two shoes insideA said brake drum, each shoe having an yadjusting, end vand a setting end, the adjusting endetl one shoe being adjacent to the adjusting endet-,the 'other shoe andthe settingv end offene shoe being adjacent to thel setting en d ottheiother shoe; means by which the settingjvends of the shoes may beforeed apart; a projecting into the space between theadjusting endsot said shoes; an adjusting block carried on said pin to be turnedintov `either ottwo positions to adjustthe brakafsaid blockbeing so shaped with relation to saidadjustingends of said shoes that it will;remain` independently in eitherl position when once set ;land a guiding member for inaintainingsaid adjusting ends of said shoes inoperativerelation.

vIn testimony'whereoi7 I have hereunto set my handatlms Angeles; California, this 19th day of May, 1922.

ninth-Y' w.- MUnLEisEN. 

